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Searching for Milky Way Satellite Streams in the Distant Halo

Presentation #405.11 in the session Poster Session.

Published onAug 31, 2024
Searching for Milky Way Satellite Streams in the Distant Halo

The morphology, kinematics, and origins of stellar streams provide crucial insights into the dynamical processes shaping the evolution and structure of galaxies. These streams act as tracers, revealing the underlying gravitational potential and dark matter distribution of galactic systems. This research aims to locate new stellar streams in the Milky Way halo, using data from the Dark Energy Camera Legacy Survey (DECaLS) DR10 and the Halo Outskirts With Variable Stars (HOWVAST) survey. In order to do this we use the matched filter technique, and create stellar density maps across a range of distance moduli. We report the identification of several potential stream candidates and recover many known streams from literature. We will present the results of this process, including the method, potential stream candidates found, and their comparison with known streams. Each new stellar stream offers new insights into galactic dynamics and evolution. With approximately 100 known stellar streams and ongoing discoveries being made, our understanding of galactic processes continues to increase with each new find. Our results open the door to extending the use of this algorithm to other large scale surveys to discover new streams. This includes the newest data release of the DECam Local Volume Exploration (DELVE) survey, and the upcoming data from the Large Synoptic Survey Telescope (LSST).

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